本研究以做中悟為調節變項，檢視勤勉人格對工程系所學生想像力的影響，並驗證自我效能在其間的中介效果。本研究結果顯示，勤勉人格可直接或間接預測三種工程學生的想像力，而做中悟則需要透過自我效能的中介來預測學生的想像力。本研究亦發現，越勤勉的學生，其構思想像越豐富，自我效能也越強。本研究總結，鼓勵學生積極參與和實作，有助於其發展工程想像能力。

This study examines how action-based inspiration moderates the effect of conscientiousness on the imaginative capabilities of engineering majors, and then tested the mediating effects of self-efficacy therein. The results show that conscientiousness both directly and indirectly predicts the three types of imaginative capabilities, whereas action-based inspiration indirectly predicts imaginative capability through self-efficacy. Our data also show that students with high levels of conscientiousness had a richer conceiving imagination and more robust self-efficacy than did students with low levels of conscientiousness. Accordingly, it is concluded that active participation is vital for engineering imagination.